Wrench.



Patented Aug.23, 1910.

y W. E. GOLDEN.

WRENCH. OATION IILBD MAR. 15, 1909. 967,899.

\NVENTOR.

; Mfflw WITNESS'ES: 08 6. WM;

WILLIAM E. GOLDEN,

OF FREMONT, OHIO.

WRENCH.

Specification of Letters Patent.

Application filed March 15,

Patented Aug. 23, 1910.

1909. Serial No. 483,590.

To all whom it may concern:

Be it known that I, WILLIAM E. GOLDEN, a citizen of the United States, and a resident of Fremont, in the county of Sandusky and State of Ohio, have invented a certain new and useful Wrench; and I do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same, reference being had to the accompanying drawings, and to the figures of reference marked thereon, which forma part of this specification.

My invention relates to screw or monkey wrenches; and has for its object the provision of an improved and highly eflicient wrench of this type, which is capable of being easily and quickly adjusted to any size within the range of the tool and also finely adjusted to enable it to fit closely to an article with which it is engaged, and which combines a maximum of strength with a minimum number of parts.

The operation, construction and arrange ment of the parts of the invention are fully described in the following specification, and a preferred embodiment thereof illustrated in the accompanying drawings, in which,-

Figure 1 is a side elevation of a wrench embodying my invention, and Fig.v 2 is a central longitudinal section thereof.

Referring to the drawings, 1 designates the wrench bar, which has the fixed jaw 2 formed integral with or rigidly secured to one end thereof and has the usual handle 3 at its other end. This bar has the edge thereof which is the lower in the drawing, or that disposed toward the opening between the jaws, notched, as at 4, at an angle to the bar to form sections of a spiral or screwthread with which the threads of a nut or internally threaded collar 5 are adapted to engage, whereby a turning of such nut or collar in engagement with said threads effects a movement thereof longitudinally of the bar. The nut 5 has its bore of suitable diameter to adapt it to have lateral play on the bar suificient to disengage the thread sections 4: and to move freely longitudinally of such bar for the purpose of quick adjustment.

6 designates the movable-jaw, which is mounted for sliding movements on the bar 1 intermediate the fixed jaw 2 and handle 3 thereof and has its rear end interlocked with the contiguous end of the nut 0r collar 5 in such manner that the nut is permitted to have free relative turning movements but is prevented from having lateral or longitudinal movements relative thereto. The means shown for accomplishing this consists in providing the inner or forward end of the nut with an annular flange 7, which fits into a notch formed by a hook 8 on the rear end of the movable jaw 6 at its upper edge and is heldwithin such notch by an opposing lug or car 9, which is provided at the lower edge of said jaw.

The hook member 8 and the opposing lug or ear 9 are formed as arc-shaped members, which are segments of the same circle, and the members 8 and 9 thus form bearings in which the nut or collar 5 is held in proper relation to the movable jaw 6, said bearings constituting such arcs or portions of the circle or annulus of which said members 8 and 9 are segments that full and adequate opposing surfaces are provided, thereby guarding against the undue wear of the bearings and consequent rattling and looseness of the parts after the wrench has been in use for a short period of time which would result if one point or narrow bearings were provided. It will be also noted that while the bearings are each formed of adequately long arcs or arcual flanges, the parts of the wrench are easily assembled. That is, when it is desired to place the collar 5 in its proper position on the movable jaw 6, the flange 7 is inserted under the overhanging portion of the hook 8, and its side then dropped inside the ear 9, after which the whole assembled device may he slid upon the bar 1.

The movable jaw 6 has its forward end fitted nicely to the bar 1, as at 10, but is sufficiently loose at its rear end one way of the bar to enable it to have the requisite lateral movement with the nut 5 to permit a disengagement of such nut from the thread 011 the bar, whereby to permit a quick adjustment of the nut and jaw longitudinally of the bar.

The nut 5 is normally held in mesh with the sectional threads 4 on the bar 1 due to the action on the bar and movable jaw 6 of a fiat spring 11, which is positioned within said jaw and has one end secured thereto,

as at 12, and its free end bearing against the upper smooth edge of the bar, or that which is opposed to the notches 4.

It is apparent with this 1 construction of wrench that any pressure between the jaws i justment. On releasing the lateral pressure.

V movable j thereof, such as straining on a nut or bolt, tends to force and hold the threads of the nut 5 into'engagement with the notches or sectional threads 4 0n the bar, and the harder such strain the more secure the engagement, as the sliding jaw acts as a simple lever whose fulcrum is at its forward end; and also that to adjust the sliding jaw on the bar 1 it is only necessary to press on the side of the nut 5 which is opposed to the bar threads 4:, to disengage the nut from such threads, and then to quickly slide themovable jaw 6 to the desired position ofadfrom the nut the spring 11 acts to automatically move the nut into engagement When the jaw has been moved to the desired position and the nut permitted to move into mesh with the bar thread, such nut may be turned to com-- pensate for the play occasioned between the 'aw and the work or article engaged when the jaw and nut oscillate to move to engaged osition with the bar 1, or

it maybe turned or the purpose of fine adjustment. It is also evident that I have provided a wrench of the quick adjustment type which is as simple and cheap in its construction as and composed of no more parts than the ordinary screw-bar wrench, thus materially enhancing its practicability and commercial value.

I wish it understood that my invention is not limited to any specific arrangement or construction of the parts except in so far as such limitations are specified 1n the claim.

Having thus described my invention, what I claim as new and desire to secure by Letters Patent, is,

A wrench, comprising, in combination, a bar having threads upon one side thereof, a chambered jaw slidable on said bar and having a reduced portion at its forward end 'to fulcrum said jaw on the bar, a hookedportion formed on the rear end of said jaw and a plain faced lug opposite thereto, each having an arc-shaped bearing, a threaded nut on the bar having an annular shoulder engaged by the hooked portion of the jaw and seated in said bearings, and a spring within the chambered jaw to maintain the nut in engagement with the threaded bar as set forth.

In testimony whereof I have hereunto signed my name to this specification in the presence of two subscribing witnesses.

WILLIAM E. GOLDEN. Witnesses:

SCO'I'I L. WOLF, H. R. WADE. 

